NEC NP-V260X NP216 : NP01UCM (ceiling mount) instructions - Page 6

WARNING • When installing wall mounts on concrete, verify that you have a minimum of 1 5/8" of actual concrete surface in the 1/ 4" diameter hole to be used for the concrete anchors. Do not drill into mortar joints! Concrete must meet ASTM C-90 specifications. • Concrete must be 2000 psi density minimum. Lighter density concrete may not hold concrete anchor. • Make sure that the supporting surface will safely support the combined load of the equipment and all attached hard- ware and components. • Never exceed the Maximum Load Capacity of 50 lb (22.7 kg). Installation to Concrete Ceilings ACC 203 (Alligator® concrete anchors) are recommended. Drill two 1/4" (6 mm) dia. holes to a minimum depth of 2.5" (64 mm). Attach ceiling plate (G) using two concrete anchors and #14 x 2.5" wood screws (F) as shown in Illustration A and 1, 2, and 3 (below). concrete anchor Tighten all fasteners. IMPORTANT: It is the responsibility of the installer to verify that the ceiling will safely support the combined load of all attached hardware and components. CONCRETE CEILING WARNING G • Tighten wood screws so that wall plate is firmly attached, but do not overtighten. Overtightening can damage the screws, greatly reducing their holding power. • Never tighten in excess of 80 in • lb (9 N.M.). • Make sure that mounting screws are anchored into the center of the studs. The use of an "edge to edge" stud finder is highly recommended. F Illustration A 1 Drill hole and insert anchor 2 concrete ceiling concrete anchor G concrete F anchor Place ceiling plate over anchor and secure with screw 3 F concrete anchor After repeating step one tighten all fasteners CUTAWAY VIEW WARNING • FOR DIRECT ATTACHMENT TO LOAD BEARING CONCRETE ONLY! Concrete expansion anchors are not intended for attachment to concrete ceilings covered with a layer of plaster, drywall, or other finishing material. If mounting to concrete ceiling covered with plaster / drywall is unavoidable, plaster / drywall must be counterbored as shown below. INCORRECT CORRECT metal bracket concrete metal bracket concrete plaster/ dry wall plaster/ dry wall Visit the NEC Web Site at www.necsam.com 6 of 9 ISSUED: 04-11-06 SHEET #: 055-9458-1 For customer care call 1-800-729-0307 or 708-865-8870.